我正在尝试将图像上传到PHP服务器。我已经尝试超过48小时没有成功。 现在我尝试以下操作，但是当我按下发送按钮时，应用程序崩溃了。
send.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
try {
bm = BitmapFactory.decodeFile("/sdcard/DCIM/android_1.png");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bm.compress(CompressFormat.JPEG, 75, bos);
byte[] data = bos.toByteArray();
HttpClient httpClient = new DefaultHttpClient();
HttpPost postRequest = new HttpPost("XXXXXXXXXXXXXXXXXXXXX/uploads/fileup.php");
ByteArrayBody bab = new ByteArrayBody(data, "android_1.jpg");
;
// File file= new File("/mnt/sdcard/forest.png");
// FileBody bin = new FileBody(file);
MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
reqEntity.addPart("uploadedfile", bab);
reqEntity.addPart("photoCaption", new StringBody("sfsdfsdf"));
postRequest.setEntity(reqEntity);
HttpResponse response = httpClient.execute(postRequest);
BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF-8"));
String sResponse;
StringBuilder s = new StringBuilder();
Toast.makeText(getApplicationContext(), "your file is saved .",Toast.LENGTH_LONG).show();
while ((sResponse = reader.readLine()) != null) {
s = s.append(sResponse);
}
System.out.println("Response: " + s);
} catch (Exception e) {
// handle exception here
Log.e(e.getClass().getName(), e.getMessage());
}
}
});
这是logcat：
03-01 12:46:37.638: D/dalvikvm(379): GC_EXTERNAL_ALLOC freed 57K, 49% free 2750K/5379K, external 1625K/2137K, paused 91ms
03-01 12:46:37.797: D/dalvikvm(379): GC_EXTERNAL_ALLOC freed 1K, 49% free 2749K/5379K, external 3125K/3903K, paused 71ms
03-01 12:46:38.557: D/dalvikvm(379): GC_EXTERNAL_ALLOC freed 4K, 49% free 2781K/5379K, external 4813K/4813K, paused 86ms
03-01 12:52:02.326: W/KeyCharacterMap(379): No keyboard for id 0
03-01 12:52:02.326: W/KeyCharacterMap(379): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
03-01 12:52:14.986: D/dalvikvm(379): GC_EXTERNAL_ALLOC freed 192K, 47% free 3050K/5703K, external 5112K/6294K, paused 68ms
03-01 12:52:15.146: D/dalvikvm(379): GC_EXTERNAL_ALLOC freed 7K, 47% free 3043K/5703K, external 6612K/8257K, paused 73ms
03-01 12:52:18.866: D/AndroidRuntime(379): Shutting down VM
03-01 12:52:18.866: W/dalvikvm(379): threadid=1: thread exiting with uncaught exception (group=0x40015560)
03-01 12:52:18.886: E/AndroidRuntime(379): FATAL EXCEPTION: main
03-01 12:52:18.886: E/AndroidRuntime(379): java.lang.NullPointerException: println needs a message
03-01 12:52:18.886: E/AndroidRuntime(379): at android.util.Log.println_native(Native Method)
03-01 12:52:18.886: E/AndroidRuntime(379): at android.util.Log.e(Log.java:230)
03-01 12:52:18.886: E/AndroidRuntime(379): at tracking.android.TrackingActivity$1.onClick(TrackingActivity.java:84)
03-01 12:52:18.886: E/AndroidRuntime(379): at android.view.View.performClick(View.java:2485)
03-01 12:52:18.886: E/AndroidRuntime(379): at android.view.View$PerformClick.run(View.java:9080)
03-01 12:52:18.886: E/AndroidRuntime(379): at android.os.Handler.handleCallback(Handler.java:587)
03-01 12:52:18.886: E/AndroidRuntime(379): at android.os.Handler.dispatchMessage(Handler.java:92)
03-01 12:52:18.886: E/AndroidRuntime(379): at android.os.Looper.loop(Looper.java:130)
03-01 12:52:18.886: E/AndroidRuntime(379): at android.app.ActivityThread.main(ActivityThread.java:3683)
03-01 12:52:18.886: E/AndroidRuntime(379): at java.lang.reflect.Method.invokeNative(Native Method)
03-01 12:52:18.886: E/AndroidRuntime(379): at java.lang.reflect.Method.invoke(Method.java:507)
03-01 12:52:18.886: E/AndroidRuntime(379): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
03-01 12:52:18.886: E/AndroidRuntime(379): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
03-01 12:52:18.886: E/AndroidRuntime(379): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：1)
嘿，我可以看到你正在使用multiPart实体上传图片，所以当你这样做的时候 而不是
MultipartEntity reqEntity = new MultipartEntity(
HttpMultipartMode.BROWSER_COMPATIBLE);
reqEntity.addPart("uploadedfile", bab);
reqEntity.addPart("photoCaption", new StringBody("sfsdfsdf"));
postRequest.setEntity(reqEntity);
此代码尝试以下代码
MultipartEntity reqEntity = new MultipartEntity(
HttpMultipartMode.BROWSER_COMPATIBLE);
FileBody mImage=new FileBody(new File(path)); // The path here is the path of the
// image either coming from the
//camera or gallery
reqEntity.addPart("uploadedfile", mImage);
reqEntity.addPart("photoCaption", new StringBody("sfsdfsdf"));
postRequest.setEntity(reqEntity);
答案 1 :(得分：0)
谢谢大家的回复......我找到了这个链接 http://www.coderzheaven.com/2012/04/26/upload-image-android-device-server-method-4/ 我也改变了我的android代码和php，也许它可以帮助别人。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Upload File"
android:id="@+id/but"
/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
android:id="@+id/tv"
android:textColor="#00FF00"
android:textStyle="bold"
/>
</LinearLayout>
这是android部分
TextView tv;
Button b;
int serverResponseCode = 0;
ProgressDialog dialog = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
b = (Button)findViewById(R.id.but);
tv = (TextView)findViewById(R.id.tv);
tv.setText("Uploading file path :- '/sdcard/android_1.png'");
b.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog = ProgressDialog.show(UploadImageDemo.this, "", "Uploading file...", true);
new Thread(new Runnable() {
public void run() {
runOnUiThread(new Runnable() {
public void run() {
tv.setText("uploading started.....");
}
});
int response= uploadFile("/sdcard/android_1.png");
System.out.println("RES : " + response);
}
}).start();
}
});
}
public int uploadFile(String sourceFileUri) {
String upLoadServerUri = "http://10.0.2.2/upload_test/upload_media_test.php";
String fileName = sourceFileUri;
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File sourceFile = new File(sourceFileUri);
if (!sourceFile.isFile()) {
Log.e("uploadFile", "Source File Does not exist");
return 0;
}
try { // open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(upLoadServerUri);
conn = (HttpURLConnection) url.openConnection(); // Open a HTTP connection to the URL
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uploaded_file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+ fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
bytesAvailable = fileInputStream.available(); // create a buffer of maximum size
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : " + serverResponseMessage + ": " + serverResponseCode);
if(serverResponseCode == 200){
runOnUiThread(new Runnable() {
public void run() {
tv.setText("File Upload Completed.");
Toast.makeText(UploadImageDemo.this, "File Upload Complete.", Toast.LENGTH_SHORT).show();
}
});
}
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
dialog.dismiss();
ex.printStackTrace();
Toast.makeText(UploadImageDemo.this, "MalformedURLException", Toast.LENGTH_SHORT).show();
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
dialog.dismiss();
e.printStackTrace();
Toast.makeText(UploadImageDemo.this, "Exception : " + e.getMessage(), Toast.LENGTH_SHORT).show();
Log.e("Upload file to server Exception", "Exception : " + e.getMessage(), e);
}
dialog.dismiss();
return serverResponseCode;
}
}